SOLO 475-B 4-Gallon Backpack Sprayer — Bleach-Resistant Diaphragm, 60 PSI

The SOLO 475-B is a 4-gallon diaphragm backpack sprayer built to resist bleach and harsh chemicals while delivering up to 60 psi for professional-grade spraying.

Engineered for contractors, grounds crews, and property managers, this SOLO backpack sprayer combines a chemically resistant diaphragm pump with comfortable carrying features to tackle disinfecting, fertilizing, weed control, and pest management across large or small sites. The pump design tolerates abrasive particles and sediment, so you can draw from wells or surface water when needed, and the materials are selected to withstand bleach and other aggressive solutions.

How does the SOLO 475-B handle harsh chemicals like bleach?

The sprayer uses a Tivilon-based diaphragm and chemically resistant materials that extend service life when used with bleach and other corrosive solutions. Its components are chosen to minimize degradation and maintain reliable pressure over time.

• Top-quality Tivilon diaphragm resists chemical breakdown
• Materials compatible with liquid formulations and bleach
• Designed for extended life under frequent chemical use

What pumping performance and spray options are available?

With a connecting-rod actuated diaphragm pump, the 475-B produces pressures up to 60 psi for strong, consistent spray patterns. Four interchangeable nozzles provide a full range of outputs from fine fan sprays to concentrated jets for different tasks.

• High-performance diaphragm pump delivers up to 60 psi
• Includes adjustable, fan, hollow cone, and jet stream nozzles
• TeeJet-compatible fittings for additional nozzle choices

Can the 475-B handle gritty or non-filtered water?

Yes — the pump assembly is designed to pass small abrasive particles without damage, allowing use with water sources that contain sediment. Built-in filtration reduces clogging at the intake and nozzle to keep the system operating smoothly.

• Pump tolerates small abrasive particles from surface or well water
• Filter basket and nozzle filter reduce blockages
• Suitable for wettable powders and liquid concentrates

Is the sprayer comfortable and configurable for different operators?

The 475-B provides deluxe shoulder straps and a waist belt to distribute weight during extended use, and the pump handle is reversible for left- or right-hand operation. A 48-inch nylon-reinforced high-pressure hose extends reach and reduces operator fatigue when treating larger areas.

• Deluxe padded shoulder straps and adjustable waist belt for comfort
• Interchangeable pump handle for left or right-handed users
• 48" nylon-reinforced high-pressure hose for extended reach

Who is this for: The SOLO 475-B is built for professionals and property stewards who need a durable, chemical-resistant backpack sprayer for recurring disinfecting, vegetation care, or pest tasks. It suits landscapers, sanitation teams, agricultural workers, golf course staff, and anyone requiring a portable sprayer that withstands bleach, wettable powders, and sediment-laden water while delivering reliable pressure and versatile nozzle options.